#BB131F#BB131F

#BB131F is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.5% C 0.196 H 25.8°. Best body text is #FFFFFF at 6.51:1 contrast (WCAG AA passes).

Color values

HEX	#BB131F
RGB	rgb(187, 19, 31)
HSL	hsl(356, 82%, 40%)
HSV	hsv(356, 90%, 73%)
CMYK	cmyk(0%, 89.8%, 83.4%, 26.7%)
CIE-LAB	lab(39.80, 61.63, 40.60)
CIE-LCH	lch(39.80, 73.80, 33.38°)
OKLab	oklab(50.5% 0.1767 0.0855)
OKLCH	oklch(50.5% 0.196 25.8)
XYZ	xyz(20.9764, 11.1330, 2.3405)
Luminance	0.1113 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB131F #13BBAF

analogous

#BB1373 #BB131F #BB5B13

triadic

#BB131F #1FBB13 #131FBB

tetradic

#BB131F #73BB13 #13BBAF #5B13BB

square

#BB131F #73BB13 #13BBAF #5B13BB

split-complementary

#BB131F #13BB5B #1373BB

monochromatic

#4C080D #830D16 #BB131F #E92331 #EE5A65

Accessibility & contrast

On white

6.51

#BB131F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.23

#BB131F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB131F

6.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB131F	#FFFFFF	#000000	##FFFFFF
##BB131F	1.00	6.51	3.23	6.51
#FFFFFF	6.51	1.00	21.00	1.00
#000000	3.23	21.00	1.00	21.00
##FFFFFF	6.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#50471D

Deuteranopia (green-blind)

#776A15

Tritanopia (blue-blind)

#CF001B

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #bb131f;
/* rgb */ color: rgb(187, 19, 31);
/* oklch */ color: oklch(50.5% 0.196 25.8);

Tailwind

colors: {
  custom: {
    50: '#da695c',
    500: '#bb131f',
    950: '#000000',
  },
}

SCSS

$custom: #bb131f;
$custom-light: #da695c;
$custom-dark: #000000;

JSON

{
  "hex": "#bb131f",
  "rgb": {
    "r": 187,
    "g": 19,
    "b": 31
  },
  "hsl": {
    "h": 355.714,
    "s": 81.553,
    "l": 40.392
  },
  "oklch": {
    "l": 0.505,
    "c": 0.19631,
    "h": 25.8
  },
  "luminance": 0.11129
}

Semantic roles & 50–950 ramp

primary

#BB131F

secondary

#58D1C9

accent

#F8EA30

background

#FEF6F5

surface

#FDECE9

border

#D5C7C5

text

#170704

muted

#857A79

Preview Lab

Preview with #BB131F

Body copy rendered with the generated semantic roles for this colour.

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